\begin{table}[htbp]\centering
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\caption{Within-Legislator Results (By Quarter) Third Quarter Measure, 2009-2016 \label{TableFEByQMRPProsp}}
\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 (Prosp. MRP)&      -962.5         &      -963.3         &                     &                     \\
                    &     (886.0)         &     (895.7)         &                     &                     \\
[1em]
Electoral Security (Prosp. Cook)&                     &                     &     -6631.9\sym{***}&     -6396.3\sym{***}\\
                    &                     &                     &    (1702.6)         &    (1683.6)         \\
[1em]
DW-Nominate (First Dim.)&                     &     26611.3\sym{*}  &                     &     22571.2\sym{+}  \\
                    &                     &   (11008.9)         &                     &   (11665.1)         \\
[1em]
Retiring            &                     &     -1244.5         &                     &     -1701.6         \\
                    &                     &    (1981.3)         &                     &    (1948.9)         \\
[1em]
House Tenure        &                     &      4570.0         &                     &      3942.9         \\
                    &                     &    (4280.0)         &                     &    (3858.8)         \\
[1em]
Majority            &                     &      -236.3         &                     &      -360.3         \\
                    &                     &     (955.6)         &                     &     (942.4)         \\
\hline
\(R^{2}\)           &       0.198         &       0.199         &       0.200         &       0.201         \\
Observations        &\num[group-separator={,}]{11329}         &\num[group-separator={,}]{11321}         &\num[group-separator={,}]{11329}         &\num[group-separator={,}]{11321}         \\
Number of House Members&\num[group-separator={,}]{693}         &\num[group-separator={,}]{693}         &\num[group-separator={,}]{693}         &\num[group-separator={,}]{693}         \\
Member Fixed Effects&         Yes         &         Yes         &         Yes         &         Yes         \\
Quarter 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}
