\begin{table}[htbp]\centering
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\caption{Within-Legislator Results (By Congress) Including Leads of Electoral Security, 2009-2016 \label{TableFEByCongMRPLeads}}
\begin{tabular}{l*{4}{c}}
\hline\hline
                    &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}&\multicolumn{1}{c}{(4)}\\
                    &\multicolumn{1}{c}{Real Spending}&\multicolumn{1}{c}{Real Spending}&\multicolumn{1}{c}{Real Spending}&\multicolumn{1}{c}{Real Spending}\\
\hline
Electoral Security (MRP)&    -20325.2\sym{*}  &    -19909.1\sym{*}  &                     &                     \\
                    &    (8806.7)         &    (8844.6)         &                     &                     \\
[1em]
Electoral Security (Cook)&                     &                     &    -35680.1\sym{**} &    -33752.7\sym{*}  \\
                    &                     &                     &   (13257.2)         &   (13669.1)         \\
[1em]
Lead of Electoral Security (MRP)&      9548.3         &      7590.3         &                     &                     \\
                    &    (9449.7)         &   (10129.9)         &                     &                     \\
[1em]
Lead of Electoral Security (Cook)&                     &                     &      7189.3         &      7067.7         \\
                    &                     &                     &   (12560.1)         &   (12614.5)         \\
[1em]
DW-Nominate (First Dim.)&                     &    308253.9         &                     &    285008.9         \\
                    &                     &  (226060.7)         &                     &  (221156.8)         \\
[1em]
Retiring            &                     &     84806.6\sym{***}&                     &     78586.8\sym{***}\\
                    &                     &    (5575.0)         &                     &    (6576.8)         \\
[1em]
House Tenure        &                     &    -58419.4\sym{***}&                     &    -58397.3\sym{***}\\
                    &                     &    (4073.9)         &                     &    (3876.9)         \\
[1em]
Majority            &                     &       587.5         &                     &       585.3         \\
                    &                     &    (6485.8)         &                     &    (6049.2)         \\
\hline
\(R^{2}\)           &       0.403         &       0.407         &       0.406         &       0.409         \\
Observations        &\num[group-separator={,}]{1069}         &\num[group-separator={,}]{1068}         &\num[group-separator={,}]{1069}         &\num[group-separator={,}]{1068}         \\
Number of House Members&\num[group-separator={,}]{504}         &\num[group-separator={,}]{504}         &\num[group-separator={,}]{504}         &\num[group-separator={,}]{504}         \\
Member Fixed Effects&         Yes         &         Yes         &         Yes         &         Yes         \\
Congress Fixed Effects&         Yes         &         Yes         &         Yes         &         Yes         \\
\hline\hline
\multicolumn{5}{l}{\footnotesize Heteroskedasticity robust standard errors clustered at the member level in parentheses}\\
\multicolumn{5}{l}{\footnotesize \sym{+} \(p<0.1\), \sym{*} \(p<0.05\), \sym{**} \(p<0.01\), \sym{***} \(p<0.001\)}\\
\end{tabular}
\end{table}
